My intent was somewhere inexpensive near the airport and Sompit's place met the bill, both from the ABB listing and what I found when I arrived shortly before midnight.
It's a great location only 15 minutes/$5 US taxi ride from the airport and even less to the nearest BTS Skytrain Station, from where you can get downtown for about a dollar. The building location is not obvious. Once you know the address, check and print a map from the internet before you leave home; follow route from the airport along the N side expressway parallel road and turn North (rigt) at the Seven-Eleven. Go 100 yards just past the grey painted cafe (closed when I was there) and turn right onto the gravel road. Again go 100 yards and it's the (only) 5 story apartment style building on the left; it's painted yellow and terra-cotta.
The nearby outdoor cafe is inexpensive with friendly service but the menu is only in Khmer, but they offered "pork or chicken" for which I got a small poultry breast, french fires and a salad.
I didn't meet Sompit but did speak to her on the phone. The building manage spoke no English but did his best to be helpful arranging for taxis, etc. I'd happily stay here again!